Other
signs direct you to vaporetto
stops or
traghetto piers (where you can catch
inexpensive gondola ferries across the Grand Canal).

In
addition to official signs, you'll see many homemade signs that shopkeepers and
residents have painted or tacked up on buildings to help lost tourists.

Don't obsess about plotting a route from point A to points
B, C, and D: Just follow the arrows to the section of town that you're trying to
reach. You can look at your map again when you're closer to our final
destination.

Tip:
Sometimes, a sign may have arrows in two directions.
This simply means that you can get to the destination by parallel routes. (But
watch out for the occasional yellow sign that's been tampered with: An extra
arrowhead may be legitimate, but it could be a prank to confuse tourists.
When in doubt, ignore add-ons.)